How to run example of IProvider and Consumer applications?

I'm trying to run below commands as per the guide:

java -cp .;target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar com.refinitiv.ema.provider.IProvider

java -jar ./target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar

But both commands throws class not found exception. When I checked inside the jar file, I couldn't find the specific classes as well.

Can anyone help me to find how to run these commands?

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Accepted answers

wasin.w

Hello @hanhuitan

If your source code directory is based on the EMA Java source code like the following example.

Your pom.xml setting must be matched this directory structure as follows:

  <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                        <configuration>
                            <archive>
                                <manifest>
                                    <mainClass>
                                        com.refinitiv.ema.examples.training.consumer.series100.ex100_MP_Streaming.Consumer
                                    </mainClass>
                                </manifest>
                            </archive>
                            <descriptorRefs>
                                <descriptorRef>jar-with-dependencies</descriptorRef>
                            </descriptorRefs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

Then you need to run the single-all-dependencies jar file with the following classpath

java -cp .;target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar com.refinitiv.ema.examples.training.iprovider.series100.ex100_MP_Streaming.IProvider


java -jar ./target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar

All comments

wasin.w

Hello @hanhuitan

It seems the RTSDKJ_Maven-1.0-jar-with-dependencies.jar file does in included the Dependencies classes.

How did you build the jar? I am assuming that you are using Maven, did you set Maven to build a single-all-dependencies jar file in the pom.xml file?

You can find an example in the "Building the project" section of the How to Set Up Refinitiv Real-Time SDK Java Application with Maven article.

Please note that the classpath in a <manifest> tag must match the source code directory.

<project xmlns="http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&quot;
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
    <modelVersion>4.0.0</modelVersion>
    ...
    <build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-assembly-plugin</artifactId>
            <executions>
                <execution>
                <phase>package</phase>
                <goals>
                    <goal>single</goal>
                </goals>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass><Main Class></mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
    </build>
</project>

wasin.w

Hello @hanhuitan

If your source code directory is based on the EMA Java source code like the following example.

Your pom.xml setting must be matched this directory structure as follows:

  <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                        <configuration>
                            <archive>
                                <manifest>
                                    <mainClass>
                                        com.refinitiv.ema.examples.training.consumer.series100.ex100_MP_Streaming.Consumer
                                    </mainClass>
                                </manifest>
                            </archive>
                            <descriptorRefs>
                                <descriptorRef>jar-with-dependencies</descriptorRef>
                            </descriptorRefs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

Then you need to run the single-all-dependencies jar file with the following classpath

java -cp .;target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar com.refinitiv.ema.examples.training.iprovider.series100.ex100_MP_Streaming.IProvider


java -jar ./target/RTSDKJ_Maven-1.0-jar-with-dependencies.jar

wasin.w

Hello @hanhuitan

Which version of the EMA API you are using?

If you want to use EMA Java 3.6.7.0 L1 --> Please specify the EMA library version "3.6.7.1" in the pom.xml dependency setting
If you want to use EMA Java 3.6.7.0 L2 --> Please specify the EMA library version "3.6.7.3" in the pom.xml dependency setting

<dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    
    <dependency>
      <groupId>com.refinitiv.ema</groupId>
      <artifactId>ema</artifactId>
      <version>${rtsdk.version}</version>
    </dependency>

Hope this helps.

hanhuitan

Hi,

Can I get a maven example project instead of Gradle?

wasin.w

Hello @hanhuitan

The RTSDK Java is currently available with Gradle-based by default. However, you can submit a change request to the product team via the https://my.refinitiv.com/content/mytr/en/feedback.html page.

hanhuitan

Hi @wasin.w ,

Could you please give me this project with maven?

wasin.w

Hello @hanhuitan

The project above is based on the How to Set Up Refinitiv Real-Time SDK Java Application with Maven article, but you need to change the source code to the EMA Java example one.

Another practical step-by-step guide to set up an EMA Java examples project with Maven is the How to Set Up Real-Time SDK Java Application with Maven on the Eclipse IDE article.

As I said earlier, the RTSDK Java is available with Gradle-based by default. However, you can submit a change request to the product team via the https://my.refinitiv.com/content/mytr/en/feedback.html page.

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